Synthesis of MgO nanostructure thin films via electrodeposition method for gas sensing applications

Authors

  • Nathu Lal Assistant Professor, Department of Physics, University of Rajasthan, Jaipur, Rajasthan 302004, India & Govt. Girls College, Jhunjhunu, Rajasthan 333001, India
  • Amit Kumar Research Scholar, Centre for Non-Conventional Energy Resources, University of Rajasthan, Rajasthan 302004, India
  • Kanhaiya Chawla Assistant Professor, Department of Physics, University of Rajasthan, Jaipur, Rajasthan 302004, India & Govt. College, Pratapgarh, Rajasthan 312605, India
  • Sandeep Sharma Assistant Professor, Department of Physics, University of Rajasthan, Jaipur, Rajasthan 302004, India & Govt. College, Jhunjhunu, Rajasthan 333001, India
  • Chhagan Lal Department of Physics, University of Rajasthan, Jaipur, Rajasthan 302004, India & Centre for Non-Conventional Energy Resources, University of Rajasthan, Rajasthan 302004, India

DOI:

https://doi.org/10.3329/bjsir.v58i2.64166

Keywords:

Magnesium oxide; Nanostructure; Electro-deposition; Electronic structure; Hydrogenation

Abstract

Magnesium oxide has long been intriguing due to several significant phenomena, including wide laser emission, spin electron reflectivity, and defect-induced magnetism. MgO nanostructures have a variety of applications, from spintronics to wastewater treatment, depending on their size and shape. Mg is sensitive material for hydrogen and forms MgH2, so we used Mg/MgO as a sensor to sense hydrogen gas in the present work. Magnesium oxide thin films were synthesized by electrodeposition technique using magnesium nitrate salt. XRD results suggested that the deposited thin films have a face-centered cubic structure. X-ray photoelectron spectroscopy was used to detect the elemental composition and chemical state with the general electronic structure of the sample. The morphology and growth of deposited nanostructure with elemental mapping of the thin film were investigated by SEM-EDS. The UV-visible analysis shows the calculated band gap for MgO thin filmwas 4.16 eV which is in the ultraviolet region. The I-V characteristics have been studied to find out the effect of hydrogenation on the synthesized MgO nanostructure and the sensitivity responseof about 31%. It is quiteevident that MgO nanostructure may be used for gas sensing applications (such as H2 gas).

Bangladesh J. Sci. Ind. Res. 58(2), 119-128, 2023

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Published

2023-06-22

How to Cite

Lal, N. ., Kumar, A., Kanhaiya Chawla, Sharma, S. ., & Lal, C. . (2023). Synthesis of MgO nanostructure thin films via electrodeposition method for gas sensing applications. Bangladesh Journal of Scientific and Industrial Research, 58(2), 119–128. https://doi.org/10.3329/bjsir.v58i2.64166

Issue

Vol. 58 No. 2 (2023)

Section

Articles

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